Underdog Promo Code May 2026

How the Underdog promo code compares

The Thrillzz promo code will net users a free $3 worth of SC, plus an additional $50 in Bonus Picks when you deposit and spend $10.

Meanwhile, the Novig promo code gives users 1,000 Novig Coins and 5 Novig Cash. Meanwhile, the Fliff promo code nets users $50 in free play after spending $5.

Some social sportsbooks struggle to keep up with other DFS sites, as the Betr Picks promo code is one of the best in the industry, giving new users $10 for free on top of a $200 deposit match. The PrizePicks promo code gives new users $50 just for playing $5, and the ProphetX promo code gives new users a 20% first purchase match, up to $100.

You can also check out our Kalshi promo code page to learn more about their prediction market, including it's $10 new user bonus. 

All that said, the Underdog promo code is one of the most competitive in the space as users can net up to $50 in bonuses. Below is a table comparing Underdog and some of the best DFS sites.

Best Underdog promo codes and bonuses — verified

The welcome bonus available with the Underdog promo code is just the warm-up. Underdog features a full roster of promos for returning players, ranging from referrals to money-back guarantees and boosts.

While they’re not as big as the sign-up offer, these returning player bonuses can still help stretch your bankroll and add some extra juice to your picks.

Play $5, Get $50 in Bonus Entries

To unlock the welcome bonus, you’ll need to deposit at least $10 after signing up. Then, play in $5 or more of fantasy contests to unlock $50 in bonus entries.

The bonus entries are wide open for Underdog’s contests so that you can use them in any competition. Don’t forget you’ll need to flip those promo bucks at least once through gameplay before they’re eligible for withdrawal. In other words, your bonus entries must be used to enter additional contests before you can cash them out.

This bonus is available everywhere Underdog operates, except in NJ, NY, MI, PA, MD, & OH (draft only states).

Underdog promotions for existing customers

The sign-up bonus gets you through the door, but Underdog keeps the perks flowing for regulars.

Check out these promos Underdog has lined up for returning players:

• 🤝 Refer-a-friend: This word-of-mouth deal gives you a $25 referral bonus when a friend deposits $25 or more.
• 📈 Profit Boosts: Underdog periodically drops profit boosts (usually around 20%), letting you boost your entry’s profit by a set percentage. You can only use the token on a single entry, and there’s usually a max payout cap of about $1,000 when the token is applied.
• 🏈 Vulture Protection: If you pick a designated RB to score a rushing or rush + rec TD, and they get "vultured" (a non-RB scores the rush TD), your entry will be protected. You’ll get the incentive if it’s the only losing selection, but this only applies to pregame picks, with one promo per Vulture Protection. The TD has to come from inside the 10-yard line after your RB touches the ball on that drive.
• 🚑 Pick’em Rescues: Injuries are never fun but this promo can help take the sting out of a player unexpectedly leaving a game early. If a player plays in the first half of a game but doesn’t return due to injury, ejection, or any other reason, your entry will be refunded the next day. Note that Rescues only apply if you chose “higher” on a player’s selection and are restricted to NBA, MLB, WNBA, NFL, CFB, CBB, and WCBB contests.

Underdog promo code summary

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What do you get from the Underdog welcome bonus?

Once you trigger the welcome bonus, you’ll receive bonus entries equal to $50. It's important to note that after you claim the bonus, your real money will be used first, and the bonus funds will kick in afterward. 

Remember, the bonus entries have a rollover requirement, meaning you must play through them once before they’re eligible for withdrawal. For example, you must play through your $50 of bonus entries by entering additional contests. Any winnings you might get from those contests can be freely withdrawn at any time.

How to claim the Underdog welcome bonus

Follow this step-by-step guide to register and secure your Underdog welcome offer.

📝 1. Register

Head straight to the DFS platform by downloading the Underdog app on iOS or Android. Once there, click the black Sign Up button in the top right corner. Fill out the sign-up form with your full name, address, and date of birth.

You’ll also need to turn on location services (if you're on desktop) or GPS (if you’re on mobile). You don’t need this to register, but you will when you’re ready to deposit later.

💰 2. Deposit

When you’re ready to make a deposit, you’ll see a few payment options like online banking via Trustly, PayPal, and your usual debit and credit cards. The minimum deposit is $10.

🎰 3. Play Contests

Once you’ve made your first deposit, you can choose between different contest types. Whether you’re making Higher/Lower projections in Pick’em games or drafting your fantasy team within a salary cap, the welcome bonus applies. You'll need to play $5 worth of contests to unlock the $50 in bonus entries. 

💵 4. Withdraw

You can’t withdraw promo credits directly, but if you win contests using them, you’re good to cash out with Interchecks or PayPal. Note there's a minimum withdrawal of $10.

Underdog promo code terms & conditions

Underdog keeps things pretty simple with its bonus terms, but you should still know the details to get the most from the offer:

• ✅ Wagering requirements: The bonus entries from the welcome bonus come with a 1x wagering requirement, meaning you need to play through them once before you can cash out.
• ✅ Minimum deposit: You’ll need to deposit at least $10 and play $5 or more to unlock the welcome bonus.
• ✅ Time to use the bonus: After claiming the bonus, you’ll have 14 days to meet the wagering requirements. Underdog calls this time window the “Turnover Period.”

Who can use the Underdog promo code?

Underdog operates in 40 states plus DC and all Canadian provinces and territories except Ontario, so you’re free to claim the welcome bonus in any of those locations. The minimum age to sign up and activate the offer is 18 in most places, except for Alabama and Nebraska (19+) and Arizona, Massachusetts, and Virginia (21+).

Underdog contests

Underdog offers a variety of contests, with some competitions pitting users against the house, and others allowing them to go head-to-head against other Underdog users.

Players can choose between standard Pick'em games, drafts, and more. With Best Ball and Daily Snake Drafts available, users have plenty of options that fit a variety of budgets. Here's a look at every contest offered by Underdog.

Bracket Challenge 🏀

Enter Underdog's free-to-play Bracket Feature for a chance to win a grand prize. You'll also find a Gimmie Pick to use on the NCAA Tournament and a special Boost Builder promo to use on college basketball picks. 

Pick’em 🎯

Underdog’s Pick'em contests revolve around making stat-based predictions. You select two or more players and choose whether they’ll go higher or lower on their projected stats. For Flex entries, you need at least three picks.

There are two modes to play:

• Standard: In this mode, all your picks must hit for you to win. If you nail two picks, you’ll get a 3x payout. Hitting all five picks earns you a 20x payout.
• Flex: This mode offers a safety net. Even if you miss one or two picks, you can still win a reduced payout. For example, you can include up to eight selections in a Flex entry; if you hit them all, you’ll land a huge 80x payout.

Underdog adds even more flexibility by giving multiple stat categories for certain players. For instance, you might come across a player like Derrick Henry with the following stat lines:

• Rush + Rec TDs
• Rushing Yards
• Rush + Rec Yards
• Rushing Attempts
• Receptions
• Receiving Yards
• Longest Reception
• Longest Rush
• Fumbles Lost

Drafts 📝

Underdog offers drafts where you build a team by selecting players in a snake-style draft format without worrying about a salary cap. You’ll compete against others based on how well your draft picks perform in real games. The main draft options include Best Ball, Daily Snake Drafts, and Battle Royale.

• Best Ball is a season-long format where you draft a team, then sit back while Underdog automatically starts your highest-scoring players each week. There’s no need for lineup changes, trades, or waiver wires. It’s a great option for those who want the thrill of drafting but don’t have time to manage their roster daily.
• Daily Snake Drafts allow you to draft a new lineup for a single day or week of games. Players take turns picking, just like in traditional fantasy sports. Once your team is set, it’s locked in, and you compete based on those picks. It’s a quick, one-time draft without the season-long commitment.
• Battle Royale mixes the snake draft format with a tournament-style competition. After drafting, you face off against other players in head-to-head matchups, advancing through rounds if you win. It’s a knockout-style contest with big prize pools for those who come out on top.

Champions 👑

In Champions, you draft a lineup of 2-8 players and select whether each athlete on your team will perform higher or lower than a benchmark stat. You’ll earn Champions Points for each correct selection and compete against other players in a tournament. If you earn the most Champions Points, you win.

Champions contests are available for popular leagues like the NFL and NBA.

Underdog deposit options

You can fund your Underdog account using a variety of payment methods, including online banking, PayPal, Apple Play, and credit or debit cards (Visa, Mastercard, Discover, Amex). The minimum deposit is $10, no matter which option you choose. Best of all, deposits are instant and come with no fees.

Why sign up with Underdog?

Since its launch in 2020, Underdog has quickly become one of the best DFS sites, giving giants like FanDuel and DraftKings a run for their money. Here are the best reasons to get in on the action.

💪 Massive additional welcome bonus

Underdog consistently offers some of the best sign-up deals around. Along with the Play $5, Get $50 in Bonus Entries offer, there's also a 50% deposit match up to $1,000. It's one of the most valuable offers on the DFS market.

🌈 Great contest diversity

Most DFS platforms tend to specialize in salary-cap drafts or Pick’em games. Underdog has embraced both, offering a wide range of options to fit every type of player.

🏈 Fantastic sports coverage

Underdog’s sports coverage is unmatched, with over 20 sports in the mix. Beyond the big leagues like the NBA, NFL, MLB, and NHL, it also dives into esports and plenty of niche markets. It’s even got some off-the-wall options like hotdog eating contests!

📣 Live play for Pick’em

It's almost impossible to find a DFS platform that lets you get in on Pick’em games after events have already kicked off. Underdog offers live lines for ongoing events, taking the excitement to the next level.

🎉 Various promotions for regulars

Let’s face it—most DFS platforms aren’t exactly known for showering their regular users with promos. Unlike many of its competitors, Underdog goes all out, always having at least three active promos for existing customers. You can get additional goodies with the Boosted Discord Community Pack, which gives you access to boosted packs, voting on future selections, and exclusive promos when you sign up for Underdog's Discord community.

📱 Mobile

Underdog’s mobile apps rank highly across the DFS community, boasting strong reviews across the board. Like other top sports betting apps, Underdog offers a fantastic user experience, featuring an intuitive layout and a choice between sleek light and dark themes.

⭐️⭐️⭐️⭐️⭐️ App Store (4.8/5.0)

The Underdog Sports app is one of the top-rated apps in the Sports category on the Apple App Store, with a 4.8/5.0 rating based on over 295k reviews. Users of the app tout its ease of use, reliable functionality, and the promos it provides.

⭐️⭐️⭐️⭐️⭐️ Google Play Store (4.6/5.0)

On the Google Play Store, the Underdog Sports app is equally well-reviewed, with a 4.6/5.0 rating based on nearly 30k reviews, offering a strong mobile experience for both Apple and Android users alike.

Underdog customer support

Underdog offers 24/7 live customer support in its app, accessible by clicking "Contact Support" in the account tab. You can also reach out via email or X/Twitter, though you may not receive a response as quickly.

Where is Underdog legal?

Underdog operates in 40 states, plus DC and Canada, but not all contest types are legal in every state or province. 

Pick’em contests are available in 19 states plus DC, Champions Mode is available in 16 states, and Drafts are available in all U.S. locations where Underdog currently operates (40 states plus DC), except for Delaware.

All three contest types are available in Canada, except for Ontario.

Underdog has announced plans to pivot away from DFS by launching a full prediction market platform. If successful, it could be legal in almost every state, since prediction markets are regulated by the Commodity Futures Trading Commission (CFTC), a federal agency. 

Underdog's current U.S. availability breaks down as follows:

Underdog latest developments

By following Underdog on social media, you can find out about special promos, the latest updates, and more. However, most of the information shared on social media is memes and quotes from coaches, athletes, and media personalities. Below is a list of the most recent updates:

April 2026

-Underdog launches 'The Extender' promotion for the NBA Playoffs, which unlocks a 100% Profit Boost for Lineup contests.

March 2026

-Underdog changes its welcome bonus, now offering $50 in Bonus Entries to new players who sign up and play at least $5 worth of DFS contests. 

-Underdog acquires Aristotle Exchange DCM, Inc. and Aristotle Exchange DCO, Inc, two CFTC-registered markets, in preparation to expand its own prediction market offerings

-Underdog lays off more than 20% of its staff, including two-thirds of its fraud operations team, as the company prepares to pivot to prediction markets.